Ok,
I am probably looking at the wrong thing in ITunes, but here is what I experienced after upgrading to 7.9.
1) None of the series sort information transferred over to iTunes/iPad. I checked all of the visible Sort fields in Get Info for each book. I tried the following, deleting the books from iTunes and the iPad. then resending them to the iTunes Library. I tried this with "User Series as Category" checked and unchecked.
The same behavior occurred whether connecting to the iTunes Library, of sending to the iPad device. In all scenarios, they did not sort correctly on the iPad under Categories.
Another little hiccup, under 7.9 I received a lot of failure to send to device errors. Even though the book in question did appear in iTunes afterward. This was occurring on books with and without series information. Also with the setting "User Series as Category" checked and unchecked.
I rolled my version back to 7.8 and these issues went away. I have been watching this thread, and have not seen any other users reporting these issues...so it must be me.
I also attempted to upgrade to iTunes 9.2.1 (previously 9.2.0)
So, my question would be...7.9 forward, where would the series sort information appear in iTunes.
I am about to attempt 7.10, and give that a go...but, if you have any suggestions...I would be grateful.